In this sentence, the author uses the word forged. in addition to meaning walked, forged also suggests moving with great effort against great resistance. when we speak of a word's additional, suggestive meaning, we are talking about

denotation
antonym
connotation
synonym

The correct answer is CONNOTATION.

Explanation:

When speaking of a word's additional or suggestive meaning, we are talking about CONNOTATION.

Words have two meanings: denotative meaning which is stated in the dictionary, and connotative meaning which derives from culture or context in which the word is uttered. For example, in Argentina, the word "gato" (cat in English) means "feline, domestic animal" in the dictionary, but it means "prostitute" in some contexts.

the illustration   that would give a reader a clear understanding of the text is a picture of men constructing the frame of a building.the frame is made of iron bars. the text describes the job of blacksmiths'. these were very organised and they had different names: "the driver" and "the heater". the text describes the way in which these men worked ; they worked iron pieces as if they were playing a sport. in fact, the text wants to show the men's skills. the text also puts some emphasis on the use of '' rivets'' in construction. this kind of nails were not always used in the construction of manhattan.

some examples:

"and with an underhand toss he hurled the smoking rivet straight at the catcher, who caught it in mid-air in his catching can." men's skills

"when the driver was ready for a new " the emphasis on the rivet ( special nail used in construction).

" it against a beam to remove any cinders, and jammed it into the waiting hole. " the emphasis on the rivet.